Exceptional structural and functional stability of Zr-doped REBaCuO tapes with respect to neutron irradiation and overheating

0573051 - FZÚ 2024 RIV US eng J - Journal Article
Jirsa, Miloš - Rameš, Michal - Viererbl, L. - Duchoň, Jan - Ďuran, I. - Entler, S.
Exceptional structural and functional stability of Zr-doped REBaCuO tapes with respect to neutron irradiation and overheating.
Superconductor Science and Technology. Roč. 36, č. 7 (2023), č. článku 075005. ISSN 0953-2048. E-ISSN 1361-6668
R&D Projects: GA MŠMT(CZ) LM2018096
Grant - others:AV ČR(CZ) StrategieAV21/3
Program: StrategieAV
Research Infrastructure: CzechNanoLab II - 90251
Institutional support: RVO:68378271
Keywords : superconducting materials * second generation REBaCuO tapes * critical currents * neutron irradiation * radiation overheating
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.6, year: 2022
Method of publishing: Open access

The impact of neutron irradiation on the properties of second-generation REBaCuO tapes was studied. The main aim of the present study was to identify the fast neutrons irradiation fluence threshold, ϕth, at which the high-field critical current at low temperatures, Ic (10 K, 8 T), starts degrading. Following up on our previous publication for low irradiation fluences, two new irradiation steps were added. Up to the last but one irradiation step, the Tc in all samples followed a linear dependence on the fast neutrons irradiation fluence, Tc(ϕ) ≈ Tc(0) − τϕ (τ being a numerical constant in units of K/1022 m−2 and ϕ in 1022 m−2). In parallel, Ic (10 K, 8 T)continuously grew with ϕ up to the threshold fluence, ϕth ≈ 3× to 4.3 × 1022 m−2. The last gradual irradiation by ϕ ≈ 1.83 × 1022 m−2 brought a severe degradation both in Tc and Ic (10 K, 8 T) in most samples, irrespective of their irradiation history.
Permanent Link: https://hdl.handle.net/11104/0343577